Question

For each of the following situations, you are asked which of two objects or substances has the higher Explain your answer with reference to the capacity of each to do work and say whether the energy that distinguishes them kinetic energy or potential energy. a. (1) A methane molecule, CH_4, in the stratosphere or (2) a CH_3 molecule and a hydrogen atom formed from breaking one of the carbon-hydrogen bonds in a CH_4 molecule. b. (1) A water molecule moving at 1.63 times 10^3 mi/h or (2) the same water molecule moving 1.81 times 10^3 mi/h. (These are the average velocities of at water molecules at 110 degree C and 200 degree C.) c. (1) Iodine solid or (2) iodine gas. (Assume that the two systems are at the same temperature.) d. (1) A nitrogen monoxide, NO, molecule and an oxygen atom in the stratosphere or (2) the NO_2 molecule that can form when they collide. e. (1) Two bar magnets pushed together with the north pole of one magnet almost touching the south pole of the other magnet or (2) the same magnets farther apart. f (1) A water molecule moving at 1.63 times 10^3 mi/h or (2) a uranium hexafluoride, UF_6, molecule moving at the same velocity.

Answer 1

will have higher energy CH_4 Rightarrow CH_3 + H OH = +ve Energy is required to break the band so this consume energy is stored hence Ch+3 +H has more energy (b)(2) will have higher energy more K.E so more energy (c)(2) with have higher energy solid has only vibration energy while gas has K.E. (d)(1) will have higher energy NO+1/2 O_2 Rightarrow NO_2 Ox = -ve Rx being exothermie, release energy so No+O_2 will have more energy (e)(2) will have more energy more closer in attractive forces potential energy decreases (f)(2) will have more energy uf_0 is solid at room temp while H_2o liquid. To ahead same K.E. more energy in required.